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ELBRIDGE MANN AND A. J. F. HOWARD, 0F MILFQRD, MASSACHUSETTS.

IMPRQVEMENT IN BOGTICRIMPS.

Specification fox-minsF nart of Letters Patent No. 85,696, dated August 1B, 1868.

To all whom it 'may concern:

Be it known that we, ELBRIDGE MANN and A.. J. F. HOWARD, of Milford, 1n the county of Worcester and State of Massachusetts, have invented a new and useful lxnprovement in Boot-Crimpers; and do hereby declare the following to he a full,- clear, and exact description thereof, due reference being had tothe accompanying drawing, which is a perspective view of one of' the movable jaws of a boot-crimper. constructed in accordance with the ideas of our invention.

This invention is an improvement in that class of boot-crimpers composed of a joined clasp or yoke, provided with a straining-screw 'and pyramidal block or spreader, and two movable serrated 'or pivot-ed jawsrthe corners ot' the upper of the boot being incased bea boot-crimper, constructed in the ordinary. manner ,of such implements, with the exception that' thebars or teeth ll L, &c.,which traverse its outer face, are of a curved or segmental shape. Y

It has been found in practice that,

corners or' uppers of the boot are strained about the crimping-block in the actcf nailing or taching, it thereto after the pressure of the crimper has been, applied to it, the leather inclosed in such crimper slips in a lateral direction, and is drawn to one side or the other of such crimper, with serious results and inconveniences, well known to persons accustomed to crimping boot-uppers. The form of the teeth, as shown in our present invention,

ei'ectually prevents this lateral displacement of the leather, and ren ders the crimper Ofmuch more value than as' formerly constructed.

The curved form of the teeth, while accomplishin g. the desired result, does not indent or abrade the lsurface of the leather, should it slip upon it in extreme cases, 'as would be the case were a series of points or short teeth to be'substituted for curved teeth. l

It will be obvious that substantially the same results would accrue ii' the curved teeth were formed upon the inner face of the .jaws of the clasp instead @of upon the movable jaw.

We claim as our invention and desire to secure byLetters Patent of the United States- The construction of the movable jaw a, as

having its teeth ofV a curved or irregular shape, in manner and for the purpose as before described.. ELBRIDGE MANN. J. F. HOWARD. Witnesses to the signature of E. Mann.: W. J. MANN, 1

EDWIN B. TAFT. Witnesses to the signature of A. J. F. Heward:

EDWARD GRIFFITH, FRED. CURTIS. 

